The fundamental law of the United States, drafted in Philadelphia in 1787 (see Constitutional Convention), ratified in 1788, and put into effect in 1789. It established a strong central government in place of the Articles of Confederation. (See Preamble to the Constitution.)
A nation or state's fundamental set of laws. Most nations with constitutions have them in written form, such as the United States Constitution. The constitution of Britain, by contrast, is an informal set of traditions, based on several different laws.
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